74154156164 has 24 divisors (see below), whose sum is σ = 141582694176. Its totient is φ = 33702704000.

The previous prime is 74154156163. The next prime is 74154156169. The reversal of 74154156164 is 46165145147.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (74154156161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330419 + ... + 507429.

It is an arithmetic number, because the mean of its divisors is an integer number (5899278924).

Almost surely, 2^74154156164 is an apocalyptic number.

It is an amenable number.

74154156164 is a deficient number, since it is larger than the sum of its proper divisors (67428538012).

74154156164 is a wasteful number, since it uses less digits than its factorization.

74154156164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186547 (or 186545 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The spelling of 74154156164 in words is "seventy-four billion, one hundred fifty-four million, one hundred fifty-six thousand, one hundred sixty-four".